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[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / mips / kernel-features.h

/* Set flags signalling availability of kernel features based on given
   kernel version number.
   Copyright (C) 1999-2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library.  If not, see
   <http://www.gnu.org/licenses/>.  */

#include <sgidefs.h>

/* Support for the accept4 syscall was added in 2.6.31.  */
#define __ASSUME_ACCEPT4_SYSCALL	1

/* Support for the recvmmsg syscall was added in 2.6.33.  */
#if __LINUX_KERNEL_VERSION >= 0x020621
# define __ASSUME_RECVMMSG_SYSCALL	1
#endif

/* Support for the sendmmsg syscall was added in 3.1.  */
#if __LINUX_KERNEL_VERSION >= 0x030100
# define __ASSUME_SENDMMSG_SYSCALL	1
#endif

#include_next <kernel-features.h>

/* The n32 syscall ABI did not have a getdents64 syscall until
   2.6.35.  */
#if _MIPS_SIM == _ABIN32 && __LINUX_KERNEL_VERSION < 0x020623
# undef __ASSUME_GETDENTS64_SYSCALL
#endif

/* The MIPS kernel does not support futex_atomic_cmpxchg_inatomic if
   emulating LL/SC.  */
#if __mips == 1 || defined _MIPS_ARCH_R5900
# undef __ASSUME_FUTEX_LOCK_PI
# undef __ASSUME_REQUEUE_PI
# undef __ASSUME_SET_ROBUST_LIST
#endif